exam1_solution - ECE 321 Problem 1 Exam 1 Solution Spring...

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ECE 321 Exam 1 SolutionSpring 2006 Problem 1 Relative permeability is a dimensionless scaling factor, µ r , that indicates how permeable a material is with respect to free space, i.e. µ material µ r µ 0 = Problem 2 flux density: B (T or Wb/m^2) field intensity: H (At/m) Problem 3 Ferrimagnetic Problem 4 Hysteresis Problem 5 No. The mixed partials are not equal. i 2 λ 1 7 = i 1 λ 2 6 = (Problem 6) Ignore. Does not exist. Problem 7 Field energy Problem 8 L abs λ i = 20i 2 i = 20 = H L inc i λ = 40i = 40 = H Problem 9 T θ rm W c = 8 1e i 1 i 2 + () sin 4 θ rm = Problem 10 Step 1: i 2 0 = W 1 i 1 λ 1 di 2 λ 2 d + = 0 i 1 i 1 5i 1 10 1x 2 + 5 i 1 + d = W 1 1 2 2 10 2 + i 1 e 5 i 1 5 + i 1 0 = i 1 , + = 1 2 2 10 2 + i 1 e 5 i 1 5 + 1 5 + = Step 2: i 1 constant =
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W 2 i 1 λ 1 di 2 λ 2 d + = 0 i 2 i 2 i 2 2 1x 2 + 1e 5i 1 i 2 + ()
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This note was uploaded on 02/19/2012 for the course ECE 321 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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exam1_solution - ECE 321 Problem 1 Exam 1 Solution Spring...

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